Home / 126,789.84-190,128.60-38,013.84

Finding the Fourth Proportional to 126,789.84, 190,128.60 and 38,013.84

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Solution

The fourth proportional to 126,789.84, 190,128.60 and 38,013.84 is: 57,003.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,789.84 : 190,128.60 = 38,013.84 : x
  2. Step 2: Convert to fraction form
    126,789.84/190,128.60 = 38,013.84/x
  3. Step 3: Cross multiply
    126,789.84x = 190,128.60 × 38,013.84
  4. Step 4: Simplify right side
    126,789.84x = 7,227,518,179.82
  5. Step 5: Solve for x
    x = 7,227,518,179.82/126,789.84
  6. Step 6: Final answer
    x = 57,003.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.